A tape path roller guide has a cylindrical guiding surface between two flanges.
A plurality of continuous venting valleys in the guiding surface are wholly parallel
to a central axis of the cylinder forming axial paddle-like surfaces generating
air flow away from the cylindrical guiding surface tending to draw air from the
guiding surface. Thus, a tape is allowed to stay in contact with the guiding surface.
Because of the continuous venting valleys, the roller cylinder is made by molding
or extrusion.